Derry on Wikipedia.

First Derry Presbyterian Church. © Mark Lusby.

Great James Street Presbyterian Church, aka the Scotch Presbyterian Church, or the Third Presbyterian Church. © Mark Lusby.

St. Augustine (Church of Ireland). © Mark Lusby.

St. Columb's Cathedral (C. of I.). © Mark Lusby.

St. Columba (R.C.). Aka the Longtower Chapel. © Mark Lusby.